The New Benicia-Martinez Bridge crossing the San Pablo Bay included more than 7,000-feet of bridge built by cast-in-place segmental construction.  It is of post-tensioned light weight concrete.  Bridge deck is more than 83 feet wide.  Typical span lengths are 161 m (528 feet) with 201 m (659 feet) at the navigation channel.  Seismic design was for important and lifeline structures.

JMEC has been structural consultant from preliminary engineering to the end of construction, and has completed the following:
  • Preliminary design of main span
  • Preliminary design of south approach structure
  • Foundation design review for the 202 m span
  • Quantity estimates for the Advanced Planning Study including the south approach structure (Frame 4), and part of main span
  • Final design of south approach structure of CIP post-tensioning box girder of 315' span
  • Final design of all pier tables
  • Final design of Hinge E adjacent to Frame 4
  • Final design of the north transition structure and pier diaphragms
  • Designed superstructure to accommodate BART and evaluated the impact of redesigning the structure to accommodate Commuter Rail
  • Completed the transverse analysis and design of the box girder in conjunction with TYLI
  • Provided construction design support services throughout construction
Project Role:  Subconsultant for Bridge Design

Clients:  California Department of Transportation
               T.Y. Lin International/CH2M Hill JV

Special Issues:  Challenges with light weight concrete and pile driving have been resolved with innovative construction techniques by Caltrans and the design team.

Schedule:  Construction was completed and the bridge was open to traffic in July 2007

Awards:  The project won many awards including the Honor Award 2008 - CELSOC; Project of the Year Award 2008 - CTF; National Recognition Award 2008 - ACEC; Excellence in Structural Engineering 2008 - NCSEA and many others.
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165 Lennon Lane, Suite 106, Walnut Creek, CA 94598
Tel:  (925) 944-8999      Fax: (925) 944-9998

Bridge Construction
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Completed Bridge
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